Neurisothrips janis, Mound, 2020

Mound, Laurence A., 2020, Diversity in the Hawaiian endemic genus Neurisothrips (Thysanoptera, Thripidae), Zootaxa 4779 (2), pp. 215-229 : 221

Neurisothrips janis sp. n.

( Figs 3 , 31 )

Female. Body and legs yellow with pale ocellar pigment, fore wings pale to weakly shaded, major setae pale particularly on head; antennal segment I as pale as head, II light brown at apex, III–VII brown but III paler on basal half. With the character states of the genus: antennal segments III and IV scarcely constricted at apex ( Fig. 3 ); head with ocellar setae III and po IV short, po setae pair I present; mouth cone extending to fore coxae; pronotum with 2 pairs of anteromarginal setae and one pair of anteroangular setae; discal area with about 20 setae; posterior margin with 3 pairs, median pair less than 1.5 times as long as submedian pairs, posteroangular setae unusually short. Tergites III–VIII with sculpture lines lateral to setal pair S1; IV and V each with 5 to 7 discal setae laterally; X with longitudinal split not fully complete. Sternites with 10–12 discal setae arranged irregularly ( Fig. 31 ), not in a transverse row.

Measurements (holotype female in microns). Body length 980. Head, length 90; width across eyes 125; ocellar setae III 25; po setae IV 23. Pronotum, length 110; width 140; pa setae 35. Metanotum median setae length 30. Fore wing length 650. Antennal segments III–VII length 38, 35, 30, 40, 20.

Male. Similar in colour and chaetotaxy to female; 2 pairs of setae on tergite IX arranged in almost straight transverse line; sternites with 1–2 discal setae present medially, but pore plates not visible because specimen not cleared.

Measurements (paratype male in microns). Body length 830. Pronotal pa setae 35.

Specimens examined. Holotype female, Molokai, Waikolu Valley (21° 07’N, - 156° 55’W), from leaves of Raillardia molokaiensis (= Dubautia ), 10.x.1943 (N.L.H.Krauss).

Paratypes: 5 females, 1 male taken with holotype.

Comments. The holotype is the female mounted dorsal side uppermost on a slide with a paratype female that is mounted ventral side uppermost ( Fig. 31 ). The pale body colour and pale ocellar pigment are similar to the condition found in dubautiae , a species that was described from a plant in the same genus. However, among the species of Neurisothrips the presence of sternal discal setae is shared only with bidens described above.

Figures

FIGURES 1–14. Neurisothrips species.Antennae 1–8: (1) antennatus; (2) bidens sp. n.; (3) janis sp. n.; (4) dubautiae; (5) karl sp. n.; (6) fran sp. n.; (7) robbiei sp. n.; (8) tsuda sp. n. Fore wing colour 9–10: (9) fullawayi; (10) saki sp. n. Head 11–14: (11) antennatus; (12) fasciatus; (13) multispinus; (14) saki sp. n.

FIGURES 24–32. Neurisothrips species. Male sternal pore plates 24–29: (24) antennatus; (25) bidens sp. n.; (26) fran sp. n.; (27) karl sp. n.; (28) robbiei sp. n. [from Santalum]; (29) robbiei sp. n. [from Psychotria]; (30) saki sp. n.. Female sternites 31–32: (31) janis sp. n.; (32) bidens sp. n.